Re: 802.1q vlans and STABLE
Peter Blok wrote: I am working with VLANs and a BayStack 450-T without stability problems, except when you configure NETGRAPH at the same time. The kernel crashes during boot-up. huh? can you give me more on this? -- __--_|\ Julian Elischer / \ [EMAIL PROTECTED] ( OZ) World tour 2000-2001 --- X_.---._/ v To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-stable" in the body of the message
RE: 802.1q vlans and STABLE
I am working with VLANs and a BayStack 450-T without stability problems, except when you configure NETGRAPH at the same time. The kernel crashes during boot-up. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Mike Tancsa Sent: Friday, February 23, 2001 04:13 To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: 802.1q vlans and STABLE Hi, are vlans and the fxp driver ready for prime time ? I have a situation where I would like to deploy a simple network which looks like [network vlan #1]-[cat5500]-[network vlan #2] | | | [freebsd fxp0] The two remote networks would be trunked back to me using 802.1q encaps off a cat 5500 switch. I am using the patch at http://www.euitt.upm.es/~pjlobo/fbsdvlan.html to account for larger frame sizes. Whats not clear to me is that when configuring fxp0, do I just assign it IPs via the vlan interface, or should I also give fxp0 a normal IP. Will it break things if fxp0 has an IP associated with it ? Also, does aliasing of vlan interfaces work as expected ? if network #1 was 10.20.30.1/24 and 10.30.40.1/24 on vlan #123 and network #2 was 172.16.1.1/24 and 192.168.1.1/24 on vlan #456 do I just do ifconfig fxp0 up ifconfig vlan0 inet 10.20.30.1 netmask 255.255.255.0 vlan 123 vlandev fxp0 mtu 1500 ifconfig vlan0 inet 10.30.40.1 netmask 255.255.255.0 alias ifconfig vlan1 Is there a limit as to the # of vlan interfaces ? Also, do I have any performance hits if I have too many vlans ? If I recall correctly, in LINUX, there used to be a performance hit if you had too many interfaces. Mike Tancsa, tel +1 519 651 3400 Network Administration, [EMAIL PROTECTED] Sentex Communications www.sentex.net Cambridge, Ontario Canada www.sentex.net/mike To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-stable" in the body of the message
Re: 802.1q vlans and STABLE
On 2001-Feb-22 22:13:20 -0500, Mike Tancsa [EMAIL PROTECTED] wrote: are vlans and the fxp driver ready for prime time ? I've been running a system with 6 VLANs on an fxp for about 6 months now without problems. The system has currently been up nearly 3 weeks (following a blackout) and had been up for 2 1/2 months before that. netstat -I gives: aalp02# netstat -i Name Mtu Network AddressIpkts IerrsOpkts Oerrs Coll dc0* 1500 Link#108:00:2b:c3:6b:b90 00 0 0 fxp0 1500 Link#200:d0:b7:20:8f:ee 252636245 0 252026018 0 0 fxp0 1500 none none252636245 0 252026018 0 0 fxp1* 1500 Link#300:d0:b7:20:bd:ab0 00 0 0 xl0* 1500 Link#400:c0:4f:ba:32:2b0 00 0 0 vlan0 1500 Link#500:d0:b7:20:8f:ee 51854151 0 24998001 0 0 vlan0 1500 net91/24 aalp02-a0 51854151 0 24998001 0 0 vlan1 1500 Link#600:d0:b7:20:8f:ee0 02 0 0 vlan1 1500 net155aalp02-a1 0 02 0 0 vlan2 1500 Link#700:d0:b7:20:8f:ee 90580612 0 128663939 0 0 vlan2 1500 net156aalp02-l0 90580612 0 128663939 0 0 vlan3 1500 Link#800:d0:b7:20:8f:ee 9104283 0 9104999 0 0 vlan3 1500 net157aalp02-l19104283 0 9104999 0 0 vlan4 1500 Link#900:d0:b7:20:8f:ee 93593008 0 81969794 0 0 vlan4 1500 net158aalp02-r0 93593008 0 81969794 0 0 vlan5 1500 Link#10 00:d0:b7:20:8f:ee 7504326 0 7289701 0 0 vlan5 1500 net159aalp02-r17504326 0 7289701 0 0 lo0 16384 Link#118 08 0 0 lo0 16384 127 localhost 8 08 0 0 ds0* 65532 Link#120 00 0 0 aalp02# http://www.euitt.upm.es/~pjlobo/fbsdvlan.html That's where I got my code last August. I haven't looked to see what has changed since then. I know I have patches for: - set the "Long Receive OK" bit in the i82559 (fxp) [rather than rummage through "error packets"] - support VLANs on the TI ThunderLan (tl driver) - support VLANs on the SMC 9432TX (tx driver) - VLAN support in driver modules for the above drivers - fix VLAN handling in arp(8) - support VLANs in tcpdump(8) [this may be in the generic tree by now] configuring fxp0, do I just assign it IPs via the vlan interface, or should I also give fxp0 a normal IP. The fxp0 interface doesn't need an IP address, but you will need to explicitly `up' it with a line in /etc/rc.conf like: ifconfig_fxp0="up media 100baseTX mediaopt full-duplex" Will it break things if fxp0 has an IP associated with it ? No, but at least the Alcatel (Xylan) switch I'm using won't send `normal' ethernet packets once the port has been designated as a VLAN trunk. Also, does aliasing of vlan interfaces work as expected ? I don't know any reason why it wouldn't, but haven't tried. I _am_ using proxy ARP on one of the VLAN interfaces. Is there a limit as to the # of vlan interfaces ? There used to be some hard limits on total interfaces (16 or 32, I can't remember which) - I'm not sure when the fix was MFC'd. I don't believe there is any hard limit on the number of VLANs, but I've never tried more than 6. Also, do I have any performance hits if I have too many vlans ? On incoming 802.1Q packets, there's a linear search through a list of known VLAN numbers to determine the destination vlan device. Unless you're planning on lots of VLAN's, this probably isn't an issue. Peter To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-stable" in the body of the message
